Pump



May 24, 1932. B. L. MASTERS ET AL PUMP Filed Sept. 16, 1930 Inventor A llomey Patented May 24, 1932 a 1,859,672

UNITED STATES PATENT OFF'IC BERT L. MASTERS AND JOHN SINADIN, OF MIDWEST, WYOMING PUMP Application filed. September 16, 1930. Serial No. 482,339.

This invention relates to new and useful this invention mounted in position in the bar improvements in pumps -which are pa ularly adapted for operation in oil wells but F lgure 2 1s a view in longitudinal section it is understood, of course, that a pump in of an intermediate portion of the barrel accordance with this invention may be used showing the lower portion of the plunger in any type of well for which same may be therein, p found adapted and desirable. Figure 3 is a view in longitudinal section An important object of the invention is to through the standing valve unit which is provide, in a manner as hereinafter set forth, mounted on the lower end of the barrel, said a. pump of the aforementioned character havlower end portion being shown threaded on ing a reciprocating plunger unit which emthe upper end of the standing valve unit. bodies a plurality of expansible metallic Referring to the drawings in detail it will sleeves, certain of the sleeves being expanded be seen that the reference numeral 1 desigby fluid pressure against the interior of the nates the pump barrel having detachably conl 10 pump barrel in a manner to provide a leaknected to its lower end by the coupling 2 (see as proof joint, thus eliminating the usual Figure a conventional standing valve unit. leather or composite cups. which is designated generally by the refer- Another important feature of the invene umem13 tion resides in the provision of a plunger A pump rod 4 extends into the upper end unit yi g a novel Construction and Q portion of the barrel 1 for vertical reciprocarangement of parts whereby the fluid Whlc tion therein and has threaded on its lower is being elevated, besides being utilized to d tio a valve cage 5 in the lower end expend the metallic Sleeves; against the P p portion of which is mounted the valve seat 6. barrel is deposited on the walls of the pump A ball check valve 7 is disposed in the cage 251 fer lubllcatlng Same and thereby 5 and engageable on the seat 6 in an obvious 76 terially reducing friction and wear on the manner barrel and the plunger. A sleeve rod 8 of tubular form is threaded e llTlRoltent obleet 0f the lnven" into the lower end portion of the cage 5 @1011 to p e a P p h character and depends from said cage and terminates 01i descrlbed Whlch y be e p e e y assem' in a threaded lower end portion upon which bled dleaseembled Wlth e mlmmum is threaded an upper bronze sleeve 9 having penditure of time and labor for the purpose a t d upper ti 10 Th upper OI replacmg y Worn broken P tion of the sleeve rod 8 is enlarged as at 11 to other e provide a tapered shoulder 12. l 35 Other oblects of the lnventlon are to PF connecting pipe section 13 is threaded vlFle a P mp of F Charade? Set forth Whlch on the lower end of the upper bronze sleeve will be l f consfirllctlon, P 9 and depends therefrom in the barrel 1. able, eificlent 1n Operatlon and whleh may be The sleeve 9 snugly engages the walls of the manufactured at low cost. 1 l 1 b t th 7 40 All of the foregoing and still further 010- M16 u e connec mg plpe Sec Ion 1 is of a diameter to provide some clearance be gets and advantages of the invention ma tween itself and the barrel ecoine apparent from a stud of the follow- 7 ing specification, taken in c o nnection with Rllfelrmg now to Flglile 2 of the drawlngs the accompanying drawings wherein like it will be seen that an intermediate tubular- 45 characters of reference designate correspondsleelte rod 14 ls threaded the lower end 5 ing parts throughout the several views, and Portlon of the connectmg' P1138 Section and h i 1s flanged, as at 15, at its upper portion to Figure 1 is a view in longitudinal section Provide the tapered Shoulder The tube showing the upper portion of a pump barrel lar sleeve rod 14 is also threaded on its lower so and a lunger constructed in accordance with end ortion and is rovided in its intermedi- 15a P P P ate portion, with the perforations or openings 17 An expansible intermediate bronze-sleeve 18 is threaded upwardly on the tubular sleeve rod 14 to a point in spaced relation to the lower end of said rod 14c and the interior of the sleeve 18 tapers upwardly as indicated at 19. The sleeve 18 snugly engages the barrel 1.

A coupling 20 is threaded on the lower end portion'of the tubular sleeve rod 1 1 and a connecting pipe section 21 is threaded on the coupling 20. A lower tubular sleeve rod 22 is threaded into the lower end portion of the connecting pipe section 21 and has formedon its upper portion a flange 23 for providing the tapered shoulder 24.

The lower portion of the tubular sleeve rod 22 is externally threaded and an intermediate portion of the tubular sleeve rod 22 has formed therein the perforations or openings 25. The perforations or openings are spaced above the threaded portion of the tubular sleeve rod 22.

A lower bronze sleeve 26 is threaded upwardly on the tubular sleeve rod 22 to a point inspaced relation to the lower end of said rod 22. It will be noted that the intermediate portion of the interior of the sleeve 26 is tlireadedly engaged with the tubular rod 22 and the end portions of the sleeve 26 are oppositely tapered in a mannerto provide upper and lower oil scrapingedges.

A coupling 27 is threaded on the lower end portion of the lower tubular sleeve rod 22 and the upper end of the coupling27 is in abutting engagement with the shouldered interior of the lower expansible sleeve 26.

A valve cage 28 of conventional,con-struction is threaded on the lower end of the coupling 27 and has mounted in its lower end portion the seat 29 upon which is engageable the lower'ball check valve 30 which is operable in the cage 28.

An extension 31=is threaded into the lower end portion of the cage 28. In operation, on the upstrokeof the plunger, the fluid is drawn into the barrel 1 through the standing valve unit 3 in the usual manner. On the downstroke of the plunger the fluid is trapped in the barrel 1 by the standing valve 3 and is forced upwardly through the plunger past the ball check valves 7 and 30 into the well tubing (not shown) It will be apparent that in a well of the usual depth the fluid in the barrel 1 and in the plunger unit will be under considerable pressure and the said fluid will pass through theperforations or openings 17 and 25 iii the tubular sleeve rods 14 and 22 respectively and expand the upper portions of'the bronze sleeves 18 and 26 against the barrel -1 in a tion as scraping edges for removing excess oil and corrosion from the interior of the barrel 1, and thus reducing wear on the barrel and materially prolonging the life thereof.

It will also be obvious that the fluid which passes through the perforations or openings 17 and 25 will lubricate the interior of the barrel 1 at all times when the pump is in operation. The upper ends of the sleeves 9, 18 and 26 scrape the interior of the barrel 1 to remove excess oil or fluid and foreign matter from said barrel on the upstroke of the plunger unit and the lower end of the bronze sleeve 26 removes the excess oil and form matter from the interior of the barrel 1 on the downstroke of the plunger unit.

Each of the bronze sleeves 9, 18 and 26 is of slightly greater diameter than the rest of the elements comprising the plunger and consequently the sleeves will receive practically all of the wear which takes place on the plunger unit due to the reciprocation of same in the barrel 1. The sleeves 9, 18 and 26 are of suitable material, such as bronze which will cause a minimum of wear to take place on the interior of the barrel 1.

Any desired number of the sleeves may be incorporated in apump plunger unit. 1t is believed that the many advantages of a pump constructed in accordance with this invention will be readily understood, and although the preferred embodimentof the invention is as illustrated and described, it is to be understood that changes in the details of construction may be had which will fall within the scope of the invention as claimed.

What is claimed is:

A pump comprising a barrel, and a plunger slidable in the barrel, said plunger including a series of tubular rods having fluid outlet openings in intermediate portions thereof, said rods each including an enlarged end portion having sliding contact with the casing, the end portions of the tubular rods being threaded, expansible metallic sleeves mounted on the tubular rods in spaced relation to the enlarged end portions thereof and defining, in conjunction with said enlarged end portions, fluid receiving chambers in the barrel, the openings in the tubular rods 0011111111111: eating with the chambers for the passage of fluid thereinto for expanding the sleeves against the barrel, said sleeves each comprising internally tapered end portions extending over the openings in spaced relation thereto, and means threadedly connecting the tubular rods together in longitudinally spaced relation. I

In testimony whereof we aflix our signatures.

BERT L. MASTERS. JOHN SINADIN. 

